In Retell, you can’t manually change an agent ID because it’s permanently tied to the agent and all connected workflows. But you can still safely update a production agent without breaking integrations by modifying the existing agent directly through the dashboard or API. JSON exports/imports are usually used more for cloning or recreating agents rather than replacing the ID of an existing production one. I’ve handled similar Retell production setups before. Are you trying to update prompts/functions only, or fully replace the agent configuration while keeping the same agent ID?